Australian singer Guy Sebastian and his best mate Tim Freeburn, are currently undertaking a 500km walk from Wagga Wagga to Sydney to raise funds to put Aussie kids through an in-school mental health program.

Guy and Tim believe Aussies need to consider mental health as an integral part of children’s education.

Guy told Chris Smith blisters are forming, there’s pain in the ankles, and more.

There is about 300km left in the walk.

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